Thunnus alalunga (Continued) 



Euryphorus nordmanni Edwards 1840. Japan. Inner surface of 



operculums. Shiino (1959e); New Zealand. Hewitt (1968b) both as 

 E_. nympha . 



LERNAEOPODIDAE 



Brachiella thynni Cuvier 1829. Indian Ocean. External surface. 

 Lewis et al. (1969). 



LERNANTHROPIDAE 



Lernanthropus hiatus Pearse 1951. Bahama Islands. Pearse (1951). 



PENNELLIDAE 



Pennella filosa (Linnaeus 1758). Brittany. Embedded in skin. 



Leigh-Sharpe (1931) as £_. germonia . 

 Pennella orthagorisci Wright 1870. Southern California. Flesh. 



Wilson (1924); South Africa. Barnard (1955). 



PSEUDOCYCNIDAE 



Pseudocycnus appendiculatus Heller 1865. Indian Ocean. Gill cavity. 

 Lewis et al. (1969); Massachusetts. Wilson (1922); New Zealand. 

 Gills. Hewitt (1969b). 



DIGENEA 



DIDYM0Z0IDAE 



Didymocystis lanceolata Guiart 1938. Atlantic. Wide spread infection. 



Guiart (1938a). 

 Didymocystis macrorchis Guiart 1938. Atlantic. Wide spread infection. 



Guiart (1938a). 

 Didymocystis thynni (Taschenberg 1879) Dollfus 1926. Gills. 



Dollfus (1952). 

 Didymocystis wedli Ariola 1902. Gills. Dollfus (1952). 

 Didymocystis philobranchia Yamaguti 1970. Hawaii. Gills. Yamaguti 



(1970). 

 Platocystis alalongae Yamaguti 1938. Pacific, Japan. Skin. 



Yamaguti (1938) ; Oregon-California. Margolis 5 . 

 Nematobothrium latum Guiart 1938. Atlantic. Stomachal peritoneum. 



Guiart (1938a). 

 Metanematobothrium guernei (Moniez 1891) Yamaguti 1938. France, 



Japan. Gills, muscles. Yamaguti (1938); California-Oregon. 



Muscles. Margolis 2 . 

 Didymocystoides alalongae (Yamaguti 1938) Yamaguti 1970. Pacific 



Japan. Gill arches. Yamaguti (1938) as Didymocystis a. 

 Didymocystoides buccal is Yamaguti 1970. Hawaii. Oral cavities. 



Yamaguti (1970). 

 Didymocystoides opercularis (Yamaguti 1938) Yamaguti 1970. Japan. 



Operculums. Yamaguti (1938) as Didymocystis o. 

 Koellikeria bi partita (Wedl 1855) Ishii 1935. Stomach. Dollfus (1952) 

 Koellikeria oriental is (Yamaguti 1934) Ishii 1935. Yamaguti (1971). 



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